PLATE 83, 



Legion NASSELLARIA. 



Orders STEPHOIDEA et SPYROIDEA. 



Families Stephanida, Semantida, Coronida, Tympanida, 

 Zygospyeida, Phormospyrida et Androspyrida. 



(ZOOL. CHALL. EXP. — PART XL. 1886.) — Rr. 



